Patents by Inventor Takao Omura

Takao Omura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Iron base powder mixture and method
    Patent number: 5135566
    Abstract: An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: August 4, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo
  • Method of preparing iron base powder mixture for pm
    Patent number: 4946499
    Abstract: An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: August 7, 1990
    Assignee: Kawasaki Steel Corp.
    Inventors: Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo
  • Process for preparing haptoglobin aqueous solution using strong anion exchanger
    Patent number: 4137307
    Abstract: An aqueous solution of haptoglobin is obtained by subjecting an aqueous solution of .alpha. and .beta.-globulin fractions of human blood plasma to further fractionation by use of ammonium sulfate, collecting fractions precipitated at a concentration between 30% and 40% saturation of ammonium sulfate, contacting a reconstituted aqueous solution of the collected fractions with an anion exchanger to adsorb haptoglobin on said anion exchanger, selectively eluting the haptoglobin from the anion exchanger, and then concentrating the resulting aqueous eluate solution. The aqueous solution of haptoglobin is subjected to heat treatment in the presence of a selected stabilizing agent for inactivating hepatitis B virus at an optional step of the process.The thus obtained aqueous solution of haptoglobin has less than 10% hypotensive activity, highly stable during storage, and free from the risk of hepatitis B virus infection.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: January 30, 1979
    Assignee: The Green Cross Corporation
    Inventors: Satoshi Funakoshi, Takao Omura, Takeshi Ohshiro
  • Haptoglobin in aqueous solution and process for preparing the same
    Patent number: 4061735
    Abstract: An aqueous solution of haptoglobin is obtained by subjecting an aqueous solution of .alpha. and .beta.-globulin fractions of human blood plasma to further fractionation by use of ammonium sulfate, collecting fractions precipitated at a concentration between 30% and 40% saturation of ammonium sulfate, contacting a reconstituted aqueous solution of the collected fractions with an anion exchanger to adsorb haptoglobin on said anion exchanger, selectively eluting the haptoglobin from the anion exchanger, and then concentrating the resulting aqueous eluate solution. The aqueous solution of haptoglobin is subjected to heat treatment in the presence of a selected stabilizing agent for inactivating hepatitis B virus at an optional step of the process.The thus obtained aqueous solution of haptoglobin has less than 10% hypotensive activity, highly stable during storage, and free from the risk of hepatitis B virus infection.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: December 6, 1977
    Assignee: The Green Cross Corporation
    Inventors: Satoshi Funakoshi, Takao Omura, Takeshi Ohshiro